Rihanna's father Ronald Fenty has now said that his daughter is not sick.

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The Sunday Mirror quotes him as saying: "When I saw the Â­pictures on Twitter I was worried like everyone else. But the truth is she was suffering from flu and exhaustion.

"She'd also lost a pound or two in weight and just wasn't feeling well. Even so, I sat her down and said she needed to take things easy. I told her it was important to chill out a bit, look after herself and not take too much on for a whileâ€¦ [A break] is just what she needs.

"Robyn is a smart, tough girl and is fine now. She has a good team around her and friends and family who will make sure she is okay."